Pinking machine



April 25, 1939. M. WOLLMAN 2,155,815

PINKING MACHINE I I Filed Nov. 17, 1957 2 Sheets-Sheet 1 fit- 9/ 92 I JNVENTQZ/ 97 2/ 90 95 M4? WOALMAN .AIIOENfFS April 25, 1939. M. WOLLMAN 2,155,815

PINKING momma Fil ed Nov, 17, 1937 V 2 Sheets-Sheet 2 Azfozemzr;

Patented Apr. 25, 1939 PATENT oF-F-ICE PINKING MACHINE V Max wtnmn, Los Angeles, Calif. Application November 17, 1937, Serial Nb. 175,043

18 Claims. my invention I incorporate a number of features ofstandard. practice in so-called pinking machines in providing a hard-faced roller and the crimping roller with a zigzag cutting edgath'e material to be pinked passing between these rollers. 1 ,In.a number of the commercial appliancesnow on the market, the lubrication is inadequate.

, Some of these have oil openings for the various operating parts such as the shaft for actuating the pinking roller and for the shaftof the hardfaced roller, but in such type of lubrication there is very apt to be an oil leakage or an oil'film on 7 various parts of the machine causing oil stains on the fabric. Therefore, many of the workshops employing pinking machines do not allow the operators to oil the machines and they are frequently run too dry, rapidly destroying the machine.

.One of the objects and features of. my invention therefore is a mechanical oiling system in which the oil is practicallyforced under pressure from a gear box having adriving and driven gear for actuating the shaft of the pinking wheel with a provision for conveying oil from the gear box tothe shaft and returning the surplus oil. The other bearings for the drive shaft are also lubricated on the same principle. One of the difficulties encountered in lubricating these machines isin properly oiling the shaft of the hard-faced roller. This I likewise accomplishby an oil conduit underneath the bedplate of the machine and thus entirely separated from the work. I also.

provide a separation equipment'in the shaftof the roller preventing a .fiowof an excess amount of oil. Hence, there is practically no leakage from the bearings.

Another difficulty encountered in pinkingmachines is to maintain an even contact andvpressure between the pinking wheel and-the hard-- faced roller. The knives of the pinking wheel being formed in a zigzag manner on the perforated wheel sometimes presstoo hard onone. portion 7 of the periphery of the roller. and with insufficient pressureon another part of the face.. To overcome this difficulty I mount the hard-faced roller on a gimbal type .of frame so that the cylindrical periphery engaging the zigzag cutting edges of the ,pinking wheelcauses the proper alinement of the shaft of the rollerwiththe. shaft of .the pinking wheel. This roller is driven by the friction of the material passing between the wheel and thecrimping cutter. This gimbal' mounting omliiodates also the flexible oil tube leading froni the gear host;

proper pressure forpinking being pivoted at one end with a pivotrparallel to theaxis of theroller. v the lever. is provided with an upwardly extending, adjustable screw engaged by .a hand-operated nut. Thisconstruction gives the desired pressure and still allows the swiveling of the gimb to have'proper contact of the periphery of the roller and the pinking wheel. g, Another feature of my inventionrelatesjto, a spring typeof clamp or holder to position and retain the bedplate in an opening in an operating table. It is quite oftenthe practice to remove a sewing machine from liable and in,'the same op'eninginstall the pinking machine. In my con.- r t a a e a ed ab t en e g n on side of the opening of the table anda leaf spring entim e e in the pos e side. s holding the baseplate and the whole machine properly ce'ntered intheopening 4 h V Another detailed featureand improvement involves a pivotally mounted drive belt guard which mayhe rotated within limits and accommodated to different angular. leads of the power belt from the driven pulley of the pinking machine.

Another feature of my invention resides in a combination guard and stripper which partially encircles the pinking wheel that is provided with an arcuate, opening through which the operator may observe the actionofthe Wheel. i This is ,of such a. construction to prevent the operator being injured but yet affording facility for'observing the working action and also stripping the ma terial being pinked. h a

Myinvention is illustrated in connection with the accompanying draw gs in which; I Figure 1 is a plan taken in the direction of the arrow I of Fig.3;

Fig. 2 is an underside view taken in the direction of the arrow 2 of Fig. 3;

.The opposite end of a1 fr me Olin Fig. 3.is aside elevation taken in the direction the gimbal' frame for the hard-faced roller;

5 is anenlajrgedview similar .to Fig. 2 of Fig. 6 is an elevation of the pulley guard removed from the machine; and

Fig. 7 is a detail elevation in the direction of the arrow I of Fig. 3 to illustrate the stripper and guard of the pinking wheel.

In my machine I employ the usual type of rectangular bedplate ll of which the long edge I2 is towards the operator and the opposite edge is remote from the operator. The end I4 is adjacent the driving equipment and the end I5 is sufficiently spaced from the crimper to provide a flat top for the material to be pinked. The bedplate is thus a fiat metal and if desired to mount the machine on legs, I provide a plurality of lugs l6 extending downwardly from the bottom of the bedplate and these may be threaded for attachment of the legs or if it is desired, to stand the machine on a table top with the bedplate only a short distance above such table. The general mounting of the pinking wheel assembly designated by the numeral 20, includes a gear box 2| which has a peripheral cover 22 and a removable side plate 23. The side 24 adjacent the bedplate may be formed integral therewith or the whole gear box may be fitted in an opening in the bedplate. The removable end plate 23 is preferably in alinement with the edge M. A shaft housing 25 has a base 26 attached to or formed integral with the side 24 and this preferably has a cylindrical bearing 21. An upper oil duct 28 extends from the interior 29 of the gear case downwardly through the end 24 and the base 25 to the bearing 21 adjacent the gear box. A return oil duct 29 extends through the lower part of the shaft housing with a return to the gear box.

The pinking wheel shaft assembly 38 is mounted in the bearing 21. The shaft has a center portion 3| of reduced diameter so that the ends only are in operating relation to the bearing. The pinking wheel 32 is secured to the shaft and held in place by a nut 33 or the like in the ordinary manner. The inner end of the shaft has a hub structure 34 attached or formed integral with a large driven wheel of a driven gear 35. This has its lower portion operating in the bottom of the gear case. The oil level therein may be determined by a gauge plug 36' and drained at a drain plug 36 and the oil replenished through a filler opening 31 also provided with a plug.

The driven gear 35 is operated by a driving gear assembly 48 having the gear 4| meshing with the gear 35. This gear is secured to a drive shaft 42 which operates in a large bearing 43 in one side, this hearing having a neck 44 and being formed integral with the side 36 of the gear case. The shaft has a reduced opposite end 45 which is mounted in a bearing bushing or the like 46, this extending through the plate 24 and being fitted in the hollow cap 41, which cap has a flange 48 and is secured to the plate 24 by screws 49 or the like.

An upper oil duct 58 extends downwardly from the outer or large part of the bearing 43 and conducts oil to the shaft. The return feed is through a downwardly inclined duct 5! which leads to the neck 44. On account of this neck being in a sense a recess, there is but little danger of oil flowing upwardly through the duct 5|. Since the driving and driven gears operate to splash the oil and the oil caught in the meshing teeth is squeezed outwardly with considerable force while this action provides sufficient oil to enter through the duct 50 and to seep along the end 45. The bearing 43 as will be noted in Fig. 4, is formed integral with the side plate 23 and has an outward extension 52.

The oil assembly 60 for the hard faced roller 6| which cooperates with the pinking wheel employs a tubular connector 62 extending through the wall 24 of the gear housing, that is, below the level of the oil and the other end of which is attached to a flexible tube 63 which may be of copper or the like. This tube is secured to one end of the axle pin 64. Such pin has a longitudinal bore 65, note Fig. 5, extending part length thereof, with a radial duct 66 to lubricate the hard faced roller 6| which rotates on this axle pin. A packing wick or the like is fitted in the bore and the radial duct. This prevents excess oil being applied to the bearing of the roller.

The equalizing mounting for the roller BI is designated by the assembly numeral 18, note Fig. 5. This employs a hinge or knuckle construction H with a plate 12 secured to the underside of the bed plate H, a hub 13 mounted on a pintle pin 14 extending therethrough. This pin is parallel to the shaft 30 forming the mounting for the pinking wheel. An outer gimbal frame 15 has a neck 76 connected to the hub 13. The frame has opposite ends 11 and 18 and opposite sides I9 and 80. The side 19 is illustrated as having a notch 8| to accommodate the oil tube 63. The inner frame of the gimbal has opposite ends 86 mounted on journal pins 81, these being fitted in the ends Ti and 18 of the outer frame and are directly at right angles to the main hinge pintle 14. The opposite sides 88 have enlarged bosses 89 with a bore therethrough in which is fitted the axle pin 84, such pin being held in place by set screws or the like. The wheel BI is therefore mounted to rotate in the space 89' of. the inner gimbal frame. It will therefore be seen that this inner frame may rotate on the pintles 81 and thus adjust the cylindrical face of the wheel to form the desired contact with the end of the crimping wheel.

The proper pressure is maintained on the wheel 5| to give the correct pressure for the pinking operation by'means of the pressure assembly 98. This employs a lever 9| having one end 92 pivoted on an adjustable screw 93 threaded in a boss 94 on the underside of the bedplate note particularly Figs. 2 and 3. The compression spring 95 has a seat on the lever at about its mid length and engages a complementary seat 96 on the outer end 18 of the gimbal or universal assembly. This seat should be in longitudinal alignment with the pivot pins 81. A screw pin 91 is pivoted to the lever and extends upwardly through an opening in the bedplate l and through a base structure 98 attached to the top of the bedplate, this also forming part of the shaft housing 25. An elongated thumb nut 99 bears on a boss I08 and has the screw 9-! threaded therein. This nut has a knurled end I!!! by which it may be rotated and thus exert an upward pull on the lever 9|, which through the spring 95 transmits a pressure on the gimbal frame 10 to attain the desired pressure between the crimping wheel and the roller. This base structure 98 is supported on a metal block I82 preferably formed as an integral casting with the bedplate I I, there being clamping screws I03.

The stripper and guard designated bythe assembly numeral Ill), note particularly Figs. 1, 3, 4 and 7, includes a supporting arm attached to the top of the shaft housing 25 by a screw.

At the outer end of this there is an arcuate frame 2 having a slot H3 in the top. This frame has one end 4 extending. slightly closer to the bedplate than the opposite end l'Iill' It is to be noted by reference to Fig. 7 that the frame has opposite sides H6 which extend downwardly over the periphery of the pinking wheel.v These wheels rotate in a direction causing a movement of the work from the operaton th'atis, in the direction of the arrow I I! of Fig. 7. The end I I5 of the frame thus acts as a stripper preventing the severed edge of, material being carried upwardly and wound around the pinking wheel or the end of the shaft of such wheel. On account of having the slot II 3, such slot is wider than the pinking wheel, the operator e'a'n readily observe the action of the pinking by looking through this slot of the combination guard'and stripper. V Another feature of my invention-relates to the structure and mounting of the pulley guard I20, note particularly Figs. 4 and 6. This guard has a face plate I2I which fitsagainst the outside plate 23. Such plate is attached to the peripheral cover 22 of the gear case, the heads of the screws projecting outwardly. Therefore the plate I2I is provided with large openings I22 through whichthe screw heads may extend and to allow a tilting motion. For this purpose the plate I2I has arcuateslots I23 through which extend set screws adjusting such screws I24. The central opening I25 is to accommodate the projecting pa1t52 of the bearing 43. A guard I26 is con-- nected to a portion of the peripheral edge of the plate I2I having a vertical section I21 and a curved section I28 and thus forming an enclosure for the pulley I29 held on the drive shaft 42"by a clamping collar I30. The plate I 2I and guard I26 has recessed portions I3I to accommodate certain of the bolts extending through the plate 23. In view of the fact that the belts from a drive pulley belowla table extend upwardly at various different angles, it will thus be seen that on account of having the pulleyguard rotatable on its axis, that this may be accommodated toa number of different directions'of the lead of the' belt from the pulley I29.

The holding and retaining" assembly for mounting the bedplate in an'opening of a work table or the like designated by the assembly I40 includes a fixed abutment I4I extending downwardly from the lower side of the bedplate II. This has return ends I42 to' strengthen the abutment. Such abutment has a long surface parallel to one edge of the bedplate. A circular leaf spring I43 is held in place by a clamp I44 on the opposite side of the bedplate and extending downwardly. Therefore when the bedplate is fitted in an opening of a work 'table' such as after removal of asewing machine, the abutment I4I may engage the edge of thetabl'e atone side of the opening and the bowed portion I45 of the spring, the opposite side. This thus gives a sufficient resilient pressure to hold the machine steady in such opening.

With my invention I utilize a conventional gauge I50 to regulate the position" of the edge of the cut in pinking material. While in the drawings I have illustrated one type of pinking wheel giving a straight zig-zag or V shaped cut, it will be understood that with my inventio'n I may utilize wheels giving various types of scallops or other fancy cuts. The characteristics of my invention in having the universal joint or gimbal type of mounting for the pressure roller is that much less pressureisrequiredbetWeen the roller 'Ifhereforels's pressure is needed on the spring through the'ac'tion of the lever 9|. I A Various changes may be made the details of the construction without departing from the spirit or scope of the invention as defined by the appended claims. Iclaim: J 1. In a pinking machine; having a fixed shaft housing with a shaft extending therethrough, a pinking wheel on said shaft, a complementary shaft having a pressure roller thereon combined with an enclosed gear housing having alf driven gear for the first shaft, 2; driving gear' mounted on a shaft, said gear housing being adapted to contain oil with the driven gear dipping therein,

a' feed on duct in the said shaft housing" on-the' upper side leading from the gear, housing and a; return oil duct in the lower part of the said shafthousing returning from a. part of the first shaft remote from the driven gear to the gear hous' mg. I

'2. In a pinking machine as claimed in claim- 1 means tomove and adjust the pressure roller and its shaft in reference to the'pinking wheel and a flexible oil duct leadingfrom the gear housing tos'aid complementary shaft,

3. In a pinking machine as claimed in claim 1 thejshaft for the driving gear being mounted in a bearing; said bearing havingan'upper oil duct leading downwardly to the driving shearer" afeed of oil, a return oil duct leading through the lower part of the latter bearingfrom the driving shaft, there being a recessin the bearing at" the outlet of the second oil duct to prevent a reverse flow of oil.

4. In a pinking machine having an enclosed gear housing, a shaft housing extending therefrom, a driven shaft extending through said shaft housing and having a driven gear in the gea housing and a pinking wheel on the outer end of said shaft, a' driving shaft; a second bearing" rigidly connected tothe gear housing for the'drivingfs haft', said driving shaft having a driving gear meshing with the driven gear, the said gear" housing being adapted" to contain oil in a lower portion with the driven gear dippingtherein, the said second bearing having a reducedneck, a first oil feed duct extending from the upper part of'the' second bearing to the driving shaft, a second re turn oil duct leading from the driving shaft through the second bearing to thesaidneck, a third oil duct formingan oil feed extending from the geanhousing through the upper partofthe shaft housing to the driven shaft, a fourth oil duct forming a return in the lower part oft he said shaft housing leading from an outer portion thereof to the gear housing. 7 v

5. In a pinking machine:'as clairned in claim. 4, a thrust roller having an idler shaft, a" bearing structure for said idler shaft, means readjust saidbearing structure to vary the pressure be tween the'roller and the wheel, an oil duct leading fromthe'gear housing to'theidler shaft, there being means in said'idler shaft to communicate" oil to the bearing of said shaft. 7 k

6. In a pinking machine having'a' bedplatei'a" gear housing at one end of the plate having a lowerportion extending below thepla'te'and an upper portion above such plate, asha'ft abusingconnected to thegear housing'above' the bedpla'te and having. a driven shaft extending there? through-with a pinkin'gjwheel atits outerend, said wheelbeinglocated'above the bedplatel said neonate having" a ope rbll'er halving a shift aifid an" adlus'fabl 5133i" 4 bearing being mounted below the bedplate combined with an oil duct connected to the gear housing extending below the bedplate and connected to the shaft of the roller, said shaft having a bore'with means to convey oil from the said duct to the bearing of the roller shaft.

7. In a pinking machine as claimed in claim 6, the bearing for the roller shaft having a structure forming a pivotal connection to the base plate, the pivot being parallel to the roller shaft whereby the said latter shaft may have a movement towards and from the said bedplate, the said duct having a construction for flexing in the movement of the said bearing.

8. In a pinking machine as claimed in claim 6, the bearing of the roller shaft being provided with a gimbal frame, one element of which has a pivotal connection to the bedplate whereby the roller shaft may be adjusted to and from the bedplate and tilted in reference thereto.

9. A pinking machine having a base plate, an enclosed gear housing connected thereto extending partly below and partly above the plate, a main shaft housing extending laterally from the gear'housing above the bedplate and having a driven shaft extending therethrough with a pinking wheel on the outer end operating above the bedplate, an upper bearing connected to the gear housing and having a driving shaft extending therethrough, said upper bearing having a reduced neck, a driving gear on the driving shaft and a driven gear on the driven shaft meshing together with the driven gear being adapted to dip in oil in the gear housing, the said bearings extending into the gear housing and restricting the space therein, the gears having hubs also restricting the space in the gear housing whereby oil is discharged with'considerable pressure between the gears, a first and upper gear duct leading from the upper part of the upper bearing to the driving shaft, a second and return gear duct in the upperbearing leading from the driving shaft to" the said neck at thelower portion thereof, a third duct forming a feed leading from the gear housing through the shaft housing to an upper part of the driven shaft, a fourth and return duct leading through the shaft housing from the endiremote from the gear housing to such gear housing, a gimbal frame having a pivotal connection to the underside of the bedplate, the said pivot being parallel to the driven shaft, a tilting journal mounted in said frame and having an idler shaft therein with a pressure roller connected to said latter shaft, the idler shaft having a bore with means to conduct oil to the said journal and a flexible oil duct leading from the idler shaft to the gear housing below the said bedplate.

10. A pinking machine having a rotatable pinking wheel operating on a shaft fixed as to position combined with a gimbal frame member having a pivotal connection to a fixed structure, the pivot being parallel to the shaft of the pinking wheel, an inner frame pivotally connected to the outer frame on pivots at. right angles to the first pivot, an axle pin mounted in the inner frame at right angles to the pintles of such inner frame and a hard faced roller mounted on said stub shaft and means to oscillate the outer frame on its pivot to the fixed structure.

11. A pinking machine as claimed in claim 10, the axle pin having an oil duct therein extending from one end and communicating with the roller and an oil conduit connected to the said end.

12. In a pinking machine having a bedplate with an opening therein, a pinking wheel assemblyincluding a driving shaft therefor mounted in a fixed position relative to the bedplataa hard faced roller extending through the said opening combined with a gimbal frame assembly, a knuckle construction with a first pintle pin connected to the bedplate in a position parallel to the shaft of the pinking wheel, a hub on said pintle pin, an outer frame rigidly connected to the hub, an inner frame mounted on journal pins connecting the inner and outer frames. said journal pins being at right angles to the said pintle pin, an axle pin mounted in the inner frame at right angles to the pivot pins of said inner frame, the hard faced roller being rotatably mounted on the axle pin and a pressure assembly with an operating means extending through and above the bedplate to oscillate the gimbal frame on the knuckle assembly to thereby develop the desired pressure between the roller, the gimbal frame permitting a tilting of the face of the roller to form an operating contact with the pinking wheel.

13. In a pinking machine as claimed in claim 12, the outer frame of the gimbal frame on one side having a space, the axle pin having an oil duct extending from one end and communicating with the roller and a flexible oil conduit'extending through the said space and connected to the end of the axle pin having the opening of the oil duct.

14. In a pinking machine as claimed in claim 12, the pressure assembly including a lever having one end pivoted to the underside of the bedplate, a screw connected to the other end and extending upwardly through the bedplate with a thumb nut threaded thereon, the nut engaging a fixed structure and a compression spring between the lever and the" outer gimbal frame remote from the knuckle.

15. In a pinking machine having a bedplate, a shaft housing mounted in a fixed position relative to the bedplate, a shaft extending'through said housing, a pinking wheel on the end of the shaft and at the end of the housing combined with a stripper and guard'including a supporting arm attached to the shaft housing, an arcuate frame connected to the arm'and partly enclosing a portion of the pinking wheel above the bedplate, said frame having a slot in the top exposing the full width of the pinln'ng wheel considered in an axial direction whereby the operator may observe the action of the pinking wheel through the said slot and one end of the frame be operative as a stripper. i I r 16. In a device as described, a pinking machine having a bedplate and a table having a top with an elongatedslot forming an opening combined with a fixed straight line abutment on the underside of the bedplate of substantially the same lengthas the slot, a curved resilient means secured to the underside of the bedplate and positioned remote from the abutment and having a considerable range of flexibility whereby when the pinking machine is placed on the table top with the abutment and the flexible means extending therethrough, the abutment engages one side of the slot and the curved resilient means is adapted to flatten and compress on the other side of the slot thereby providing a relatively long contact with the side of the slot opposite the abutment.

17. In a pinking machine in which a bedplate is provided with a pinking wheel on the top and a pressure roller on the bottom, the roller operating through an opening in the bedplate, said bedplate on the bottom having an elongated straight abutment and adjacent one edge of the bedplate, a clamp positioned spaced from the opposite edge of the bedplate on the underside thereof and a substantially circular leaf spring secured to said clamp, the bedplate being adapted to be placed on a table top over an opening with the abutment engaging one side of the opening and the leaf spring the opposite side.

18. In a pinking machine having a gear housing with a driving gear therein and a pulley on the outside of the gear housing, there being a bearing extending outside of the gear housing between the gear and the pulley, the pulley belt guard having a face plate with a central opening, the said opening being fitted on the said bearing for rotation, the guard having an outwardly extending flange, arcuate slots in the said face plate and clamping screws extending through said slots and attached to the outside of the gear housing whereby the guard may be rotated on the axis of the said opening.

MAX WOLLMAN. 

